Please keep us posted on how those do, I'd love to see how well your method pulls off fruiting annonas in pots. I'd also encourage you to take the time to hand pollinate all of your annonas if you aren't doing so already.
In the previous linked thread there were pics of a sugar apple fruiting. How has that fared, and how were the fruit? The general idea is that fruiting a smallish tree is terrible for its health, and sets it back a good deal. I'd love to see if holding fruit was particularly stressful on that plant, and how it does this season for you. Thanks again for sharing.